At the long end of Canon's L-series lens lineup, the EF 800mm f/5.6L IS USM is a super telephoto prime distinguished by its impressive reach and advanced optical design. Utilizing two fluorite elements, one Super UD element, and one ultra-low dispersion element, chromatic aberrations and color fringing is virtually eliminated and imagery exhibits notable clarity, sharpness, and color accuracy. A Super Spectra coating has also been applied to suppress flare and ghosting in order to achieve greater contrast when working in backlit and harsh lighting conditions.

Features

- Super telephoto prime is designed for full-frame Canon EF-mount DSLRs, however can also be used with APS-C models where it provides a 1280mm equivalent focal length.

- Relatively bright f/5.6 maximum aperture affords control over depth of field for isolating subjects and producing selective focus imagery.

- Two fluorite elements, along with one Super Ultra-Low Dispersion element and one ultra-low dispersion element, are used to greatly reduce color fringing and chromatic aberrations in order to achieve greater clarity and color accuracy.

- Super Spectra coating has been applied to individual elements to minimize ghosting and flare for greater contrast and color neutrality when working in strong lighting conditions.

- An Optical Image Stabilizer helps to minimize the appearance of camera shake by up to four shutter speed stops to better enable working in low-light conditions and with slower shutter speeds. In addition to the single-shot standard IS mode, a second mode is also available that it optimized for panning.

- A ring-type Ultrasonic Motor (USM), along with an internal focusing system, is employed to deliver fast, precise, and quiet autofocus performance as well as full-time manual focus override.

- A Focus Preset function is available to quickly recall a programmed focusing position.

- Focus Limiter switch lets you constrain the focusing to three different ranges to suit different applications: 19.7-65.6′, 19.7′-infinity, or 65.6′-infinity.

- Rounded eight-blade diaphragm contributes to a pleasing out of focus quality that benefits the use of shallow depth of field and selective focus techniques.

- As a member of the esteemed L-series, this lens is sealed against dust and moisture for working in inclement environmental conditions.

- Fixed rotating tripod collar benefits working with the lens atop a tripod or monopod.

- Compatible with optional EF 1.4X and EF 2X teleconverters.